Temperature-dependent viscoelastic properties of the human supraspinatus tendon |
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| Authors: | Chun-Yuh Huang Vincent M Wang Evan L Flatow Van C Mow |
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| Institution: | 1. Department of Biomedical Engineering, University of Miami, 219A McArthur Annex, 1251 Memorial Drive, Coral Gables, FL 33146, USA;2. Department of Orthopedic Surgery, Rush University Medical Center, USA;3. Department of Orthopaedics, Mount Sinai School of Medicine, USA;4. Department of Biomedical Engineering, Columbia University, USA;1. Department of Physical Medicine and Rehabilitation, Tohoku University Graduate School of Medicine, Sendai, Japan;2. Department of Orthopedic Surgery, Tohoku University School of Medicine, Sendai, Japan;1. Biomedical Engineering Program, College of Engineering and Applied Science, 601 Engineering Research Center, ML 0048, University of Cincinnati, Cincinnati, OH 45221-0048, United States;2. Medical Scientist Training Program, College of Medicine, University of Cincinnati, Cincinnati, OH, United States;3. Department of Reconstructive Sciences, College of Dental Medicine, University of Connecticut Health Center, Farmington, CT, United States;1. Department of Mechanical Engineering, University of Delaware, Newark, DE, United States;2. Department of Biomedical Engineering, University of Delaware, Newark, DE, United States;1. Biomechanics Laboratory, Division of Orthopedic Research, Mayo Clinic, Rochester, MN, United States;2. Department of Orthopedic Surgery, Tohoku University School of Medicine, Sendai, Japan;3. Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, United States |
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| Abstract: | Temperature effects on the viscoelastic properties of the human supraspinatus tendon were investigated using static stress-relaxation experiments and the quasi-linear viscoelastic (QLV) theory. Twelve supraspinatus tendons were randomly assigned to one of two test groups for tensile testing using the following sequence of temperatures: (1) 37, 27, and 17 °C (Group I, n=6), or (2) 42, 32, and 22 °C (Group II, n=6). QLV parameter C was found to increase at elevated temperatures, suggesting greater viscous mechanical behavior at higher temperatures. Elastic parameters A and B showed no significant difference among the six temperatures studied, implying that the viscoelastic stress response of the supraspinatus tendon is not sensitive to temperature over shorter testing durations. Using regression analysis, an exponential relationship between parameter C and test temperature was implemented into QLV theory to model temperature-dependent viscoelastic behavior. This modified approach facilitates the theoretical determination of the viscoelastic behavior of tendons at arbitrary temperatures. |
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